package com.softgarden.baselibrary.utils;

import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.FrameLayout.LayoutParams;

import java.lang.reflect.Method;


/**
 * @author by DELL
 * @date on 2017/10/24
 * @describe
 */

public class SystemBarTintManager {


    static {

        // Android allows a system property to override the presence of the navigation bar.

        // Used by the emulator.

        // See https://github.com/android/platform_frameworks_base/blob/master/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java#L1076

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {

            try {

                Class c = Class.forName("android.os.SystemProperties");

                Method m = c.getDeclaredMethod("get", String.class);

                m.setAccessible(true);

                sNavBarOverride = (String) m.invoke(null, "qemu.hw.mainkeys");

            } catch (Throwable e) {

                sNavBarOverride = null;

            }

        }

    }


    /**
     * The default system bar tint color value.
     */

    public static final int DEFAULT_TINT_COLOR = 0x99000000;


    private static String sNavBarOverride;


    private final SystemBarConfig mConfig;

    private boolean mStatusBarAvailable;

    private boolean mNavBarAvailable;

    private boolean mStatusBarTintEnabled;

    private boolean mNavBarTintEnabled;

    private View mStatusBarTintView;

    private View mNavBarTintView;


    /**
     * Constructor. Call this in the host activity onCreate method after its
     * <p>
     * content view has been set. You should always create new instances when
     * <p>
     * the host activity is recreated.
     *
     * @param activity The host activity.
     */

    @TargetApi(19)

    public SystemBarTintManager(Activity activity) {


        Window win = activity.getWindow();

        ViewGroup decorViewGroup = (ViewGroup) win.getDecorView();


        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {

            // check theme attrs

            int[] attrs = {android.R.attr.windowTranslucentStatus,

                    android.R.attr.windowTranslucentNavigation};

            TypedArray a = activity.obtainStyledAttributes(attrs);

            try {

                mStatusBarAvailable = a.getBoolean(0, false);

                mNavBarAvailable = a.getBoolean(1, false);

            } finally {

                a.recycle();

            }


            // check window flags

            WindowManager.LayoutParams winParams = win.getAttributes();

            int bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;

            if ((winParams.flags & bits) != 0) {

                mStatusBarAvailable = true;

            }

            bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION;

            if ((winParams.flags & bits) != 0) {

                mNavBarAvailable = true;

            }

        }


        mConfig = new SystemBarConfig(activity, mStatusBarAvailable, mNavBarAvailable);

        // device might not have virtual navigation keys

        if (!mConfig.hasNavigtionBar()) {

            mNavBarAvailable = false;

        }


        if (mStatusBarAvailable) {

            setupStatusBarView(activity, decorViewGroup);

        }

        if (mNavBarAvailable) {

            setupNavBarView(activity, decorViewGroup);

        }


    }


    /**
     * Enable tinting of the system status bar.
     * <p>
     * <p>
     * <p>
     * If the platform is running Jelly Bean or earlier, or translucent system
     * <p>
     * UI modes have not been enabled in either the theme or via window flags,
     * <p>
     * then this method does nothing.
     *
     * @param enabled True to enable tinting, false to disable it (default).
     */

    public void setStatusBarTintEnabled(boolean enabled) {

        mStatusBarTintEnabled = enabled;

        if (mStatusBarAvailable) {

            mStatusBarTintView.setVisibility(enabled ? View.VISIBLE : View.GONE);

        }

    }


    /**
     * Enable tinting of the system navigation bar.
     * <p>
     * <p>
     * <p>
     * If the platform does not have soft navigation keys, is running Jelly Bean
     * <p>
     * or earlier, or translucent system UI modes have not been enabled in either
     * <p>
     * the theme or via window flags, then this method does nothing.
     *
     * @param enabled True to enable tinting, false to disable it (default).
     */

    public void setNavigationBarTintEnabled(boolean enabled) {

        mNavBarTintEnabled = enabled;

        if (mNavBarAvailable) {

            mNavBarTintView.setVisibility(enabled ? View.VISIBLE : View.GONE);

        }

    }


    /**
     * Apply the specified color tint to all system UI bars.
     *
     * @param color The color of the background tint.
     */

    public void setTintColor(int color) {

        setStatusBarTintColor(color);

        setNavigationBarTintColor(color);

    }


    /**
     * Apply the specified drawable or color resource to all system UI bars.
     *
     * @param res The identifier of the resource.
     */

    public void setTintResource(int res) {

        setStatusBarTintResource(res);

        setNavigationBarTintResource(res);

    }


    /**
     * Apply the specified drawable to all system UI bars.
     *
     * @param drawable The drawable to use as the background, or null to remove it.
     */

    public void setTintDrawable(Drawable drawable) {

        setStatusBarTintDrawable(drawable);

        setNavigationBarTintDrawable(drawable);

    }


    /**
     * Apply the specified alpha to all system UI bars.
     *
     * @param alpha The alpha to use
     */

    public void setTintAlpha(float alpha) {

        setStatusBarAlpha(alpha);

        setNavigationBarAlpha(alpha);

    }


    /**
     * Apply the specified color tint to the system status bar.
     *
     * @param color The color of the background tint.
     */

    public void setStatusBarTintColor(int color) {

        if (mStatusBarAvailable) {

            mStatusBarTintView.setBackgroundColor(color);

        }

    }


    /**
     * Apply the specified drawable or color resource to the system status bar.
     *
     * @param res The identifier of the resource.
     */

    public void setStatusBarTintResource(int res) {

        if (mStatusBarAvailable) {

            mStatusBarTintView.setBackgroundResource(res);

        }

    }


    /**
     * Apply the specified drawable to the system status bar.
     *
     * @param drawable The drawable to use as the background, or null to remove it.
     */

    @SuppressWarnings("deprecation")

    public void setStatusBarTintDrawable(Drawable drawable) {

        if (mStatusBarAvailable) {

            mStatusBarTintView.setBackgroundDrawable(drawable);

        }

    }


    /**
     * Apply the specified alpha to the system status bar.
     *
     * @param alpha The alpha to use
     */

    @TargetApi(11)

    public void setStatusBarAlpha(float alpha) {

        if (mStatusBarAvailable && Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {

            mStatusBarTintView.setAlpha(alpha);

        }

    }


    /**
     * Apply the specified color tint to the system navigation bar.
     *
     * @param color The color of the background tint.
     */

    public void setNavigationBarTintColor(int color) {

        if (mNavBarAvailable) {

            mNavBarTintView.setBackgroundColor(color);

        }

    }


    /**
     * Apply the specified drawable or color resource to the system navigation bar.
     *
     * @param res The identifier of the resource.
     */

    public void setNavigationBarTintResource(int res) {

        if (mNavBarAvailable) {

            mNavBarTintView.setBackgroundResource(res);

        }

    }


    /**
     * Apply the specified drawable to the system navigation bar.
     *
     * @param drawable The drawable to use as the background, or null to remove it.
     */

    @SuppressWarnings("deprecation")

    public void setNavigationBarTintDrawable(Drawable drawable) {

        if (mNavBarAvailable) {

            mNavBarTintView.setBackgroundDrawable(drawable);

        }

    }


    /**
     * Apply the specified alpha to the system navigation bar.
     *
     * @param alpha The alpha to use
     */

    @TargetApi(11)

    public void setNavigationBarAlpha(float alpha) {

        if (mNavBarAvailable && Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {

            mNavBarTintView.setAlpha(alpha);

        }

    }


    /**
     * Get the system bar configuration.
     *
     * @return The system bar configuration for the current device configuration.
     */

    public SystemBarConfig getConfig() {

        return mConfig;

    }


    /**
     * Is tinting enabled for the system status bar?
     *
     * @return True if enabled, False otherwise.
     */

    public boolean isStatusBarTintEnabled() {

        return mStatusBarTintEnabled;

    }


    /**
     * Is tinting enabled for the system navigation bar?
     *
     * @return True if enabled, False otherwise.
     */

    public boolean isNavBarTintEnabled() {

        return mNavBarTintEnabled;

    }


    private void setupStatusBarView(Context context, ViewGroup decorViewGroup) {

        mStatusBarTintView = new View(context);

        LayoutParams params = new LayoutParams(LayoutParams.MATCH_PARENT, mConfig.getStatusBarHeight());

        params.gravity = Gravity.TOP;

        if (mNavBarAvailable && !mConfig.isNavigationAtBottom()) {

            params.rightMargin = mConfig.getNavigationBarWidth();

        }

        mStatusBarTintView.setLayoutParams(params);

        mStatusBarTintView.setBackgroundColor(DEFAULT_TINT_COLOR);

        mStatusBarTintView.setVisibility(View.GONE);

        decorViewGroup.addView(mStatusBarTintView);

    }


    private void setupNavBarView(Context context, ViewGroup decorViewGroup) {

        mNavBarTintView = new View(context);

        LayoutParams params;

        if (mConfig.isNavigationAtBottom()) {

            params = new LayoutParams(LayoutParams.MATCH_PARENT, mConfig.getNavigationBarHeight());

            params.gravity = Gravity.BOTTOM;

        } else {

            params = new LayoutParams(mConfig.getNavigationBarWidth(), LayoutParams.MATCH_PARENT);

            params.gravity = Gravity.RIGHT;

        }

        mNavBarTintView.setLayoutParams(params);

        mNavBarTintView.setBackgroundColor(DEFAULT_TINT_COLOR);

        mNavBarTintView.setVisibility(View.GONE);

        decorViewGroup.addView(mNavBarTintView);

    }


    /**
     * Class which describes system bar sizing and other characteristics for the current
     * <p>
     * device configuration.
     */

    public static class SystemBarConfig {


        private static final String STATUS_BAR_HEIGHT_RES_NAME = "status_bar_height";

        private static final String NAV_BAR_HEIGHT_RES_NAME = "navigation_bar_height";

        private static final String NAV_BAR_HEIGHT_LANDSCAPE_RES_NAME = "navigation_bar_height_landscape";

        private static final String NAV_BAR_WIDTH_RES_NAME = "navigation_bar_width";

        private static final String SHOW_NAV_BAR_RES_NAME = "config_showNavigationBar";


        private final boolean mTranslucentStatusBar;

        private final boolean mTranslucentNavBar;

        private final int mStatusBarHeight;

        private final int mActionBarHeight;

        private final boolean mHasNavigationBar;

        private final int mNavigationBarHeight;

        private final int mNavigationBarWidth;

        private final boolean mInPortrait;

        private final float mSmallestWidthDp;


        private SystemBarConfig(Activity activity, boolean translucentStatusBar, boolean traslucentNavBar) {

            Resources res = activity.getResources();

            mInPortrait = (res.getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT);

            mSmallestWidthDp = getSmallestWidthDp(activity);

            mStatusBarHeight = getInternalDimensionSize(res, STATUS_BAR_HEIGHT_RES_NAME);

            mActionBarHeight = getActionBarHeight(activity);

            mNavigationBarHeight = getNavigationBarHeight(activity);

            mNavigationBarWidth = getNavigationBarWidth(activity);

            mHasNavigationBar = (mNavigationBarHeight > 0);

            mTranslucentStatusBar = translucentStatusBar;

            mTranslucentNavBar = traslucentNavBar;

        }


        @TargetApi(14)

        private int getActionBarHeight(Context context) {

            int result = 0;

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {

                TypedValue tv = new TypedValue();

                context.getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true);

                result = TypedValue.complexToDimensionPixelSize(tv.data, context.getResources().getDisplayMetrics());

            }

            return result;

        }


        @TargetApi(14)

        private int getNavigationBarHeight(Context context) {

            Resources res = context.getResources();

            int result = 0;

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {

                if (hasNavBar(context)) {

                    String key;

                    if (mInPortrait) {

                        key = NAV_BAR_HEIGHT_RES_NAME;

                    } else {

                        key = NAV_BAR_HEIGHT_LANDSCAPE_RES_NAME;

                    }

                    return getInternalDimensionSize(res, key);

                }

            }

            return result;

        }


        @TargetApi(14)

        private int getNavigationBarWidth(Context context) {

            Resources res = context.getResources();

            int result = 0;

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {

                if (hasNavBar(context)) {

                    return getInternalDimensionSize(res, NAV_BAR_WIDTH_RES_NAME);

                }

            }

            return result;

        }


        @TargetApi(14)

        private boolean hasNavBar(Context context) {

            Resources res = context.getResources();

            int resourceId = res.getIdentifier(SHOW_NAV_BAR_RES_NAME, "bool", "android");

            if (resourceId != 0) {

                boolean hasNav = res.getBoolean(resourceId);

                // check override flag (see static block)

                if ("1".equals(sNavBarOverride)) {

                    hasNav = false;

                } else if ("0".equals(sNavBarOverride)) {

                    hasNav = true;

                }

                return hasNav;

            } else { // fallback

                return !ViewConfiguration.get(context).hasPermanentMenuKey();

            }

        }


        private int getInternalDimensionSize(Resources res, String key) {

            int result = 0;

            int resourceId = res.getIdentifier(key, "dimen", "android");

            if (resourceId > 0) {

                result = res.getDimensionPixelSize(resourceId);

            }

            return result;

        }


        @SuppressLint("NewApi")

        private float getSmallestWidthDp(Activity activity) {

            DisplayMetrics metrics = new DisplayMetrics();

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {

                activity.getWindowManager().getDefaultDisplay().getRealMetrics(metrics);

            } else {

                // TODO this is not correct, but we don't really care pre-kitkat

                activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);

            }

            float widthDp = metrics.widthPixels / metrics.density;

            float heightDp = metrics.heightPixels / metrics.density;

            return Math.min(widthDp, heightDp);

        }


        /**
         * Should a navigation bar appear at the bottom of the screen in the current
         * <p>
         * device configuration? A navigation bar may appear on the right side of
         * <p>
         * the screen in certain configurations.
         *
         * @return True if navigation should appear at the bottom of the screen, False otherwise.
         */

        public boolean isNavigationAtBottom() {

            return (mSmallestWidthDp >= 600 || mInPortrait);

        }


        /**
         * Get the height of the system status bar.
         *
         * @return The height of the status bar (in pixels).
         */

        public int getStatusBarHeight() {

            return mStatusBarHeight;

        }


        /**
         * Get the height of the action bar.
         *
         * @return The height of the action bar (in pixels).
         */

        public int getActionBarHeight() {

            return mActionBarHeight;

        }


        /**
         * Does this device have a system navigation bar?
         *
         * @return True if this device uses soft key navigation, False otherwise.
         */

        public boolean hasNavigtionBar() {

            return mHasNavigationBar;

        }


        /**
         * Get the height of the system navigation bar.
         *
         * @return The height of the navigation bar (in pixels). If the device does not have
         * <p>
         * soft navigation keys, this will always return 0.
         */

        public int getNavigationBarHeight() {

            return mNavigationBarHeight;

        }


        /**
         * Get the width of the system navigation bar when it is placed vertically on the screen.
         *
         * @return The width of the navigation bar (in pixels). If the device does not have
         * <p>
         * soft navigation keys, this will always return 0.
         */

        public int getNavigationBarWidth() {

            return mNavigationBarWidth;

        }


        /**
         * Get the layout inset for any system UI that appears at the top of the screen.
         *
         * @param withActionBar True to include the height of the action bar, False otherwise.
         * @return The layout inset (in pixels).
         */

        public int getPixelInsetTop(boolean withActionBar) {

            return (mTranslucentStatusBar ? mStatusBarHeight : 0) + (withActionBar ? mActionBarHeight : 0);

        }


        /**
         * Get the layout inset for any system UI that appears at the bottom of the screen.
         *
         * @return The layout inset (in pixels).
         */

        public int getPixelInsetBottom() {

            if (mTranslucentNavBar && isNavigationAtBottom()) {

                return mNavigationBarHeight;

            } else {

                return 0;

            }

        }


        /**
         * Get the layout inset for any system UI that appears at the right of the screen.
         *
         * @return The layout inset (in pixels).
         */

        public int getPixelInsetRight() {

            if (mTranslucentNavBar && !isNavigationAtBottom()) {

                return mNavigationBarWidth;

            } else {

                return 0;

            }

        }


    }
}
